Method of covering earthenware cocks with lead.



C. DEMPORT. METHOD OF COVERING EARTHENWARE COCKS WITH LEAD.

APPLICATION FILED .IAN.8.19|6.

Patented Mar. 21, 1916.

HVVENTOR. CI-IJELESfiiM/WRT WITNESS. WW1?? ATTORNEY mama sasr CHARLES DEMPORT, OF SOLVAY, NEW YORK.

METHOD OF COVERING EARTI-IENVABE COCKS WITH LEAD.

Specification of Letters Patent.

Patented Mar. 21, 1916.

Original application filed September 14, 1915, Serial No. 50,612. Divided and this application filed January To all whom it may concern: 7 Be it known that I, CHARLES DEMroRT, a citizen of the United States, residing at Solvay, in the countyof Onondaga and State of New York, have invented certaln new and useful Improvements in Methods of Covering Earthenware Cocks with Lead, of which the following is a specification.

My invention relates to earthenware cocks employed in connection with the manufacture and handling of nitric, sulfuric, and other acids, and has for its object to prov de an improved method of coating or coverlng such cocks, with lead, whereby the cocks are suitably reinforced and protected, and may also be conveniently and readily connected to the lead pipes usually employed for conducting the acids to and from the cocks.

To the accomplishment of the foregoing the invention consists primarily in adjustably disposing the earthenware cocks 1n suitable molds, and then pouring molten lead into the molds for castingleadenjackets or shells upon and around the whole cocks at a single operation instead of applying sheet lead in a number of pieces to the cooks, as heretofore practised.

As one construction suitable for the pur- .pose and found very eflicient in use, reference is made to the accompanying drawing, in which Figure 1 is a front-side elevation of the complete device ready for operation. Flg. 2 is an edge view of the same. Fig. 3 s a vertical longitudinal section taken on line of Fig. 1. Fig. 4 is a top plan View. F1g. 5 is a view of the earthenware cock. Fig. 6 1s a view of the cock after it is covered with lead. Figs. 7 and 8 are respectively an edge and face view of the split cores.

In the drawing, 2 and 2 represent the halves or sections of a splitmold, which are preferably made of suitable metal, as cast iron, or steel, and having hollow sides, which when the sections are placed together, as shown in the drawing, form the mold-cavity 3, in which is disposed an earthenware cock, as 4. Dowel-pins 5 carried by one section and entering sockets in the opposite section, serve to prevent the lateral movement of the sections 2-2 when they are put together be fore each casting operation. The mold 22 Serial No. 71,086.

preferably stands up-right during the casting operations, and its lower end is supported by a block or part 6, which has a suitable recess or cavity 7 in its top side to receive the lower ends of the mold sections, the said recess preferably being circular and large enough in diameter to allow the free insertion of the mold.

8 represents a platform, table, or base, having a raised portion, or base 9, the top of which is hollowed-out, as at 9 and is provided with an annular ledge 9", upon which rests the block or plate 6. No other attaching means are provided for these parts, and the block 6 may be readily detached from the table 8, and the mold may also be detached from the block 6, for the purpose of removing the cock, after each casting operation.

Each earthenware cock 4 is hollow throughout longitudinally, and is also provided with a transverse tapering bore or opening 4, in which is disposed the usual rotatable plug or valve 10, by means of which the flow of liquid or acid to and from the cock is controlled. The plug 10, has a handle 10, and may be held in the body 4 by any suitable means. When the cock 4 is placed in a mold 2-2, it is supported therein by a core or plug 11, having a reduced portion 11 which is inserted in the lower open end of the body 4. The part 11 passes through a central perforation in the block 6, and its lower end rests upon the upper end of a screw 12, which is threaded centrally through the table 8 and the raised portion 9. The said screw having a hand-wheel 12 for manipulating said part. By this construction and arrangement of the bottom support for the cook, the turning of the screw in sufficiently to prevent cracking due to the variance in the temperature of the molten lead in the cock. The cock is then disposed in the mold and adjusted relatively tothe sides and ends of the mold, and then the cock is filled with sand 15, to prevent the molten lead from flowing into the interior of the earthen body.

After the cock is set in position within the mold split cores or parts 13 and 1d are inserted in the openings 13 and 14;, and their inner ends are held against the corresponding faces of the body 4:, and concentrically to the transverse opening 4, by a bolt 16, the said cores being perforated at 16 for the purpose. The said bolt has a tapering head 16" whichenters the counter-sunk outer face of the core 18'. The opposite or threaded end of the bolt 16 receives a nut 17 having a coneshaped portion which enters a corresponding socket in the face of the core 14:.

The tightening up of the nut 17, draws the cores 13 and 14: tightly against the opposite faces of the body of the cock 4, and as the said cores are larger in diameter than the opening 4, they not only prevent the lead from entering the said opening, but also prevent the lead from approaching close enough to the opening to touch and thereby prevent the plug 10 of the cock from properly seating in hole 4. The tapered head of the bolt and the tapered nut tend to slightly expand the cores 13 and 14, so as to hold them tightly and firmly in place, and. hold the earthenware cock from shifting in the mold, as well as prevent the escape of any of the lead at the said points. Before the bolt 16 istightened-up a second plug or core 18, having a reduced lower end 18, is inserted in the open top-end of the body 4, to prevent the molten lead from entering-the upper end of the cock, as well as for coring" the extended portion 19 of the lead jacket 19. The core 18 is held in place by gravity. By referring to Fig. 3, it will be seen that the cores 11 and 18 are smaller short distance beyond the ends of the earth enware cock. This providessuitable lead extensions 19 and 19 to which the lead conducting pipes (not shown) may be attached without interference from the earthenware.

The lead piping referred to is usually secured to the terminals 19' and 19 of the cast covering or jacket 19, by a process which is known as burning. After the cock is disposed in the mold, one of the operators places the jaws of a pair of tongs against the opposite sides of the mold 2-2, at about the positions or points indicated by the arrows 20 in Fig. 1, and he applies enough used for any suitable pressure to the tongs to hold the mold steady, and at the same time prevent the sections 22 from spreading apart, while 7 another operator pours the molten lead from a ladle 21 into the top opening 22,

which encircles the u'pper'core 18, as indi-' cated in Fig. 3. The dotted lines in Fig. 1,

show the manner in which the mold sections 2 and 2 may be separated for inserting and removmg the earthenware'cocks.

My method for casting a lead jacket or covering upon earthenware cocks is extremely simple, and the cockscanbe covered more rapidly and at about one fourth" the expense, as compared with, the old or precocks.

able rough handling and lasta long time,

which effects still a further saving. when thecocks have served their. usefulness, the lead is reclaimed and re-molded, and may be preciable waste.

I have illustrated one form of apparatus embodying my invention and have described v with some particularity the details of various parts, but the casting apparatus is' not confined to such details of parts as they may be varied without departing from my method claimed herein.

purposewithout ap- I claim as new and desire to secure by Let V ters Patent. is

lpThe processof covering earthenware cocks with lead, which consists of placing a cock in a split mold and adjustably securing said cock in the said mold, then filling .the hollow interior of the cock with sand, then plugging the open'ends of the cock, and finally pouring molten lead into the hollow space between the mold and the said cock.

2. The herein described process of covering earthenware cocks with lead, which consistsofdisposing the earthenware cock concentrically in a suitable mold having a hollow interior larger than the said cock, then filling the cock with sand, then adjusting the said cock relatively to the inner walls of said mold, and finally pouring molten lead into the hollow space surrounding said cock.

3-. The process of covering earthenware cocks with lead, which consists of heating the cooks, then disposing the cocks in a split mold, then filling the cooks with sand,

then adjusting the cocks relatively to the in- I ner walls of the mold, and finally pouring the molten metal into the moldfor covering the cooks.

molten metal.

In testimony whereof I affix my signature.

CHARLES DEMPORT.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

4. The process of covering cooks with metal, which consists of heating the cock, then placing the cock between the Sections of a split mold having a hollow interior larger than the said cock, then filling the cock with sand, then adjusting the cock relatively to the sides of the mold, then closing 

